Ford Racing expands its line of Sealed Racing Engines with the 540 horsepower S374W engine developed for asphalt and dirt circle track racing. Ford Sealed Racing Engines deliver reliable and lasting performance as they are built to professional racing series standards. You won't find repackaged production parts in this engine. Ford Racing starts with the Boss 351 block then adds an Eagle forged steel crankshaft, steel H-beam rods and forged Mahle pistons with full floating pins. The engine is topped off with CNC ported Z-heads and an Edelbrock Super Victor intake manifold.